When one is used to the trackball, it is true that it is difficult to return to a "normal" mice. I purchased this cordless model to replace the same with wireless trackball I bought it 10 years ago (called "Trackman wheel" Logitech Trackman Wheel Trackball Marble Optical Technology Patented Ergonomic but apparently is no longer produced ). Compared to the old model, the ball "scraped" a little more and the quality of plastics is significantly lower. But the trackball fulfills all its functions, with 2 buttons and more. A good buy and a correct value to 37.99. But I regret the decline in quality.
Updated after 2 days of utlisation: after a running-minus the hook ball and use becomes more fluid.
